Pipe-tongs



UNITED STATES HENRY HERBERT, OF CINCINNATI, OHIO.

PIPE-TONGS.

Specification forming part of Letters Patent No. 45,496, dated December 20,1864.

To all tc/tom it may concrrn Be it known that I, HENRY HERBERT, of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improvement in Pipe-Tongs; and I do hereby declare the following to be afull, clear, and exact description thereof reference being had to the accompanying drawings, making part of this specication.

My improvement relates to devices whereby a pipe-litters tongs are made more cicient and comprehensive than heretofore, the invention being more particularly designed for the use ot' the gas-fitter.

Figure 1 represents a pair of tongs adapted to chase or, cut a screw-threaded pipe. Fig. 2 represents a pair of tongs rigged as a screwwrench. Fig. 3 represents the same adapted for cutting a groove around a pipe for the purpose ot' severing it. Fig. 4 represents a device whereby the tongs may be adapted to operate on work of divers diameters.

A B representthe two jaws of a gas-tters pipe-tongs. The jaw A has a dovetailed socket, a, for the reception of the various bits and dies needed by gas-litters. rEhe jaw A is also furnisl'ied with an adjusting-screw, C, to enable the operator to set the bit out or in, as may be required. D is a setscrew, to secure the bit to the place of adjustment. The counterjaw B has the customary hooked form to enable it to grasp the pipe on the side opposite to that on which the jaw A engages.

hen required as a chase or screw cutter, the dovetailed socket a is made to hold a screw-cutting die, E, while similarI dies, E E, are secured in as many sockets, b b', of the jaw B. rlhe jaw B is also traversed by a screw-threaded gage, F, which, when its point rests in contact with the inner face ofthe die E, limits the closure of the jaws to etrrespond with the diameter of the pipe which is being operated upon.

'hen required for use as a simple pipewrench, a nipper-bit, G, is made to occupy the socket a.

H is a graver-bit, by means of which the operator is enabled to cut around a pipe by a rapid motion of the tool preliminary to severing the pipe at that part.

I adapt my tongs for divers sizes of pipe by causing the pivot I to occupy a longitudinal slot, J, in the jaw B, transverse corrugations b onthe said jaw fitting similar corrugations, It, on the face of a washer, K, which is nally secured in any place desired by means of the nut M upon the screw-threaded extremity of the pivot I. The inner side of the jaw A is recessed (see dotted lines in Fig. 4) to receive the washer K.

I am aware that a wrench has before been constructed to receive changeable bits, as described in Iilliam Vebsters patent ot'Fehruary 9, 1864, and also that it is not new to construct pipe-tongs with the pivot working in a slot to adapt them to be adjusted for different sizes of pipe; but

Having thus described my invention, I claim and desire to secure by Letters Patent- As a new article of manufacture, the adjustable pipetongs, hereinbefore described, provided with the slot J, pivot I,.nut M, corrugated washer K k, corrugations b", and dovetail sockets a b b', all as specified.

In testimony of' which invention I hereunto set my hand.

HENRY HERBERT.

Titnesses JAMES Il. LAYMAN, GEO. H. KNIGHT. 

